• 作者： Han, Donghao ^1,2 Liu, Hao ¹ Wu, Ji ¹ Zhang, Cheng ¹
• 作者单位：
  1. Key Laboratory of Microwave Remote Sensing, National Space Science Center, Chinese Academy of Sciences, Beijing, CO

  2. 100190, China

  3. University of Chinese Academy of Sciences, Beijing, CO

  4. 100049, China
• 提交时间： 2017-03-10

摘要: The inter-element phase calibration plays an important role in the overall calibration scheme for synthetic aperture radiometer. The traditional relative phase calibration approach is to use correlated noise injection network, which will be difficult to be implemented in millimeter wave band due to the complexity of the waveguide divider network. A novel self-calibration method for interferometric radiometers with rotating thinned array, especially for the geostationary interferometric microwave sounder(GIMS), has been proposed in this paper. By using this approach, neither dedicated hardware nor dedicated calibration working model is needed to achieved the relative phase calibration. The self-calibration approach is inherently merged with the nominal observation working model of GIMS, thanks to the continuous array rotating of GIMS instrument. A running average scheme has been introduced into the self-calibration approach to enhance the SNR of the calibration data, which is normally very low with the natural earth scene. The method is demonstrated by both simulation and field imaging experiment. �2016 IEEE.

• 期刊： International Geoscience and Remote Sensing Symposium (IGARSS)
• 分类： 地球科学 >> 空间物理学
• 引用： ChinaXiv:201703.00288 (或此版本 ChinaXiv:201703.00288V1 )
  doi:10.12074/201703.00288
  CSTR:32003.36.ChinaXiv.201703.00288.V1
• 推荐引用方式： Han, Donghao,Liu, Hao,Wu, Ji,Zhang, Cheng.(2017).Inter-element phase self-calibration for GIMS (geostationary interferometric microwave sounder).International Geoscience and Remote Sensing Symposium (IGARSS).[ChinaXiv:201703.00288]